Abrams' law
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Abrams' law (also called Abrams' water-cement ratio law)[1] is a concept in civil engineering that was developed by Duff Abrams. The law states the strength of a concrete mix is inversely related to the mass ratio of water to cement.[1][2] As the water content increases, the strength of concrete decreases.
Abrams’ law is a special case of a general rule formulated empirically by René Feret:
where
- S is the compressive strength of concrete in Mpa
- A and B are constants: A=96 and B=7 (this is valid for the strength of concrete at the age of 28 days)
- w/c is the water–cement ratio, which typically varies from 0.40 to 0.60
References
Template:Civil-engineering-stub
- ↑ 1.0 1.1 Template:Cite book
- ↑ Template:Cite book
- ↑ Abrams law, air and high water-to-cement ratios by ELSEVIER